CN104098794A - Carboxymethyl-chitosan-starch-polyving-alcohol blending thin film - Google Patents
Carboxymethyl-chitosan-starch-polyving-alcohol blending thin film Download PDFInfo
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Abstract
The invention discloses a carboxymethyl-chitosan-starch-polyving-akohol blending thin film, and relates to the technical field of thin film production. The blending thin film is prepared by the following raw materials in parts by mass: 50 to 60 parts of carboxymethyl chitosan, 15 to 30 parts of starch, 15 to 30 parts of polyving alcohol, 5 to 10 parts of artemisia arenaria seed gum, 2 to 8 parts of hydroxy propyl cellulose, 3 to 6 parts of nano-silica, 5 to 10 parts of zinc stearate, 4 to 8 parts of oxidized polyethlene wax, 2 to 7 parts of ethyl silicon oil, 4 to 10 parts of glutaraldehyde and 150 to 200 parts of distilled water. The blending thin film is mainly made of the carboxymethyl chitosan, the starch and the zinc stearate with auxiliary agents, such as a plasticizing agent, a fluxing agent, a cross-linking agent and a degrading agent; not only can the excellent biodegradability of the chitosan and the starch be maintained, but also the quality of the plastic thin film can be effectively improved; moreover, the preparation method is simple and the production cost is low. Therefore, the preparation method is beneficial for industrial production.
Description
Technical field:
The present invention relates to thin film fabrication techniques field, be specifically related to a kind of cm-chitosan-Starch-Polyvinyl Alcohol blend film.
Background technology:
Chitosan is that the chitin (chitin) extensively being existed by nature obtains through deacetylation, and source is only second to Mierocrystalline cellulose, is described as " the 2nd class natural polymer ".Chitosan has good film-forming properties, has good biocompatibility with organism, biodegradable, is widely used in food fresh keeping, environmental treatment and medical field.Due to the good film-forming properties of chitosan, germ resistance and water vapor transmission, and after film forming, suitable gas barrier property makes its application in fresh-keeping field particularly outstanding.
But in actual production and application, it is found that the film of only being prepared by chitosan exists poor mechanical property, fragility greatly and is not suitable for the problems such as sour environment.Therefore, we want taking chitosan, starch and polyvinyl alcohol as main raw material, and expectation can obtain a kind of mechanical property excellence, good toughness and can be by the degradable blend film of environment.
Summary of the invention:
Technical problem to be solved by this invention is to provide that a kind of production technique is simple, cost is low and environment amenable cm-chitosan-Starch-Polyvinyl Alcohol blend film.
Technical problem to be solved by this invention adopts following technical scheme to realize:
A kind of cm-chitosan-Starch-Polyvinyl Alcohol blend film, made by the raw material of following mass fraction:
Cm-chitosan 50-60 part, starch 15-30 part, polyvinyl alcohol 15-30 part, artemisia glue 5-10 part, hydroxypropylcellulose 2-8 part, nano silicon 3-6 part, Zinic stearas 5-10 part, oxidized polyethlene wax 4-8 part, ethyl silicon oil 2-7 part, glutaraldehyde 4-10 part, distilled water 150-200 part.
Described starch is the one in W-Gum, wheat starch, oat starch, barley starch, tapioca (flour), yam starch, buckwheat starch and bean powder.
The particle diameter of described nano silicon is 20-100nm.
A preparation method for cm-chitosan-Starch-Polyvinyl Alcohol blend film, comprises the steps:
Step a: under mechanical stirring, starch is joined in 1/3 distilled water, be then warming up to 50-60 DEG C and stir 15-20min, obtain starch pasting liquid;
Step b: under room temperature, cm-chitosan is joined in remaining distilled water, obtain uniform carboxymethyl chitosan sugar soln after stirring 15-20min;
Step c: the carboxymethyl chitosan sugar soln of the starch pasting liquid of step a preparation, step b preparation and itself and raw material are joined in reactor in described ratio, be uniformly mixed 20-30min after being then warming up to 130-140 DEG C, homogeneous, vacuum outgas obtain film forming liquid;
Steps d: the film forming liquid that step c is made is extended down to opposite side from an effluent on membrane carrier surface while hot, until film forming liquid is coated on whole membrane carrier surface equably, dry by then membrane carrier being placed in to natural air drying under room temperature or being put in the baking oven of 45 DEG C, after film solidifies completely, it is stripped down from membrane carrier, obtain aimed thin film.
The invention has the beneficial effects as follows: the present invention is taking chitosan, starch and polyvinyl alcohol as main, taking softening agent, fusing assistant, linking agent and prodegradant as auxiliary, both keep the biodegradability that chitosan and starch are good, effectively improved again the quality of plastics film; And its preparation method is simple, production cost is low, is beneficial to suitability for industrialized production.
Embodiment:
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, further set forth the present invention below in conjunction with specific embodiment.
Embodiment 1:
50 parts of cm-chitosan, 15 parts of starch, 15 parts of polyvinyl alcohol, 5 parts of artemisia glue, 2 parts of hydroxypropylcelluloses, 3 parts of nano silicons, 5 parts of Zinic stearass, 4 parts of oxidized polyethlene wax, 2 parts of ethyl silicon oils, 4 parts of glutaraldehyde, 150 parts of distilled water.
Embodiment 2:
52 parts of cm-chitosan, 19 parts of starch, 19 parts of polyvinyl alcohol, 6 parts of artemisia glue, 4 parts of hydroxypropylcelluloses, 4 parts of nano silicons, 6 parts of Zinic stearass, 5 parts of oxidized polyethlene wax, 3 parts of ethyl silicon oils, 6 parts of glutaraldehyde, 160 parts of distilled water.
Embodiment 3:
55 parts of cm-chitosan, 23 parts of starch, 23 parts of polyvinyl alcohol, 7 parts of artemisia glue, 5 parts of hydroxypropylcelluloses, 4 parts of nano silicons, 8 parts of Zinic stearass, 6 parts of oxidized polyethlene wax, 5 parts of ethyl silicon oils, 7 parts of glutaraldehyde, 170 parts of distilled water.
Embodiment 4:
58 parts of cm-chitosan, 27 parts of starch, 27 parts of polyvinyl alcohol, 8 parts of artemisia glue, 7 parts of hydroxypropylcelluloses, 5 parts of nano silicons, 9 parts of Zinic stearass, 7 parts of oxidized polyethlene wax, 6 parts of ethyl silicon oils, 8 parts of glutaraldehyde, 180 parts of distilled water.
Embodiment 5:
60 parts of cm-chitosan, 30 parts of starch, 30 parts of polyvinyl alcohol, 10 parts of artemisia glue, 8 parts of hydroxypropylcelluloses, 6 parts of nano silicons, 10 parts of Zinic stearass, 8 parts of oxidized polyethlene wax, 7 parts of ethyl silicon oils, 10 parts of glutaraldehyde, 200 parts of distilled water.
Starch used is the one in W-Gum, wheat starch, oat starch, barley starch, tapioca (flour), yam starch, buckwheat starch and bean powder.
The particle diameter of nano silicon used is 20-100nm.
Prepare cm-chitosan-Starch-Polyvinyl Alcohol blend film according to the composition of raw materials of embodiment 1-5, comprise the steps:
Step a: under mechanical stirring, starch is joined in 1/3 distilled water, be then warming up to 50-60 DEG C and stir 15-20min, obtain starch pasting liquid;
Step b: under room temperature, cm-chitosan is joined in remaining distilled water, obtain uniform carboxymethyl chitosan sugar soln after stirring 15-20min;
Step c: the carboxymethyl chitosan sugar soln of the starch pasting liquid of step a preparation, step b preparation and itself and raw material are joined in reactor in described ratio, be uniformly mixed 20-30min after being then warming up to 130-140 DEG C, homogeneous, vacuum outgas obtain film forming liquid;
Steps d: the film forming liquid that step c is made is extended down to opposite side from an effluent on membrane carrier surface while hot, until film forming liquid is coated on whole membrane carrier surface equably, dry by then membrane carrier being placed in to natural air drying under room temperature or being put in the baking oven of 45 DEG C, after film solidifies completely, it is stripped down from membrane carrier, obtain aimed thin film.
Tensile strength, elongation at break, transmittance, anti-fog effect, film both sides temperature head and the soil degrading time of cm-chitosan-Starch-Polyvinyl Alcohol blend film embodiment 1-5 being made according to existing National Standard Method are measured, and result is as follows:
Mechanical property, transmittance and the heat retaining property of cm-chitosan-Starch-Polyvinyl Alcohol blend film of being prepared by embodiment 1-5 as can be seen from the above table, are all better than common PE film and PVC film; And research finds that film prepared by the present invention also has good biodegradability, in its at room temperature 5-6 month, can be completely degraded, be far superior to degradation time 9-15 month of common degradable film.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. cm-chitosan-Starch-Polyvinyl Alcohol blend film, it is characterized in that, made by the raw material of following mass fraction: cm-chitosan 50-60 part, starch 15-30 part, polyvinyl alcohol 15-30 part, artemisia glue 5-10 part, hydroxypropylcellulose 2-8 part, nano silicon 3-6 part, Zinic stearas 5-10 part, oxidized polyethlene wax 4-8 part, ethyl silicon oil 2-7 part, glutaraldehyde 4-10 part, distilled water 150-200 part.
2. cm-chitosan-Starch-Polyvinyl Alcohol blend film according to claim 1, is characterized in that: described starch is the one in W-Gum, wheat starch, oat starch, barley starch, tapioca (flour), yam starch, buckwheat starch and bean powder.
3. cm-chitosan-Starch-Polyvinyl Alcohol blend film according to claim 1, is characterized in that: the particle diameter of described nano silicon is 20-100nm.
4. a preparation method for cm-chitosan-Starch-Polyvinyl Alcohol blend film, is characterized in that, comprises the steps:
Step a: under mechanical stirring, starch is joined in 1/3 distilled water, be then warming up to 50-60 DEG C and stir 15-20min, obtain starch pasting liquid;
Step b: under room temperature, cm-chitosan is joined in remaining distilled water, obtain uniform carboxymethyl chitosan sugar soln after stirring 15-20min;
Step c: the carboxymethyl chitosan sugar soln of the starch pasting liquid of step a preparation, step b preparation and itself and raw material are joined in reactor in described ratio, be uniformly mixed 20-30min after being then warming up to 130-140 DEG C, homogeneous, vacuum outgas obtain film forming liquid;
Steps d: the film forming liquid that step c is made is extended down to opposite side from an effluent on membrane carrier surface while hot, until film forming liquid is coated on whole membrane carrier surface equably, dry by then membrane carrier being placed in to natural air drying under room temperature or being put in the baking oven of 45 DEG C, after film solidifies completely, it is stripped down from membrane carrier, obtain aimed thin film.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104403298A (en) * | 2014-11-24 | 2015-03-11 | 西北农林科技大学 | Biodegradable composite film and preparation method thereof |
| CN104788979A (en) * | 2015-05-11 | 2015-07-22 | 王美岭 | Preparation method of fully-degradable foamed plastic |
| CN104892998A (en) * | 2015-05-22 | 2015-09-09 | 铜陵方正塑业科技有限公司 | Impact-resistant full-degradable plastic film and preparation method thereof |
| CN104892999A (en) * | 2015-05-22 | 2015-09-09 | 铜陵方正塑业科技有限公司 | High-water-resistance full-degradable plastic film and preparation method thereof |
| CN104945678A (en) * | 2015-05-22 | 2015-09-30 | 铜陵方正塑业科技有限公司 | Chestnut shell-based full-degradable plastic film and preparation method thereof |
| CN105885110A (en) * | 2016-05-27 | 2016-08-24 | 黑龙江八农垦大学 | Degradable packaging film material and preparing method and application thereof |
| CN106398068A (en) * | 2016-11-24 | 2017-02-15 | 安徽省天乐塑业有限公司 | Degradable food packaging film and preparation method thereof |
| CN107513183A (en) * | 2017-09-26 | 2017-12-26 | 桐城市中汇塑业有限公司 | A kind of carboxymethyl chitosan amylose novolac epoxy resin blending whole degrading film and preparation method thereof |
| CN108285603A (en) * | 2018-03-07 | 2018-07-17 | 常德金德新材料科技股份有限公司 | A kind of degradable high-barrier composite material and preparation method thereof |
| CN108395582A (en) * | 2018-04-11 | 2018-08-14 | 河北农业大学 | Cassava starch-polyvinyl alcohol-chitosan composite film and preparation method thereof |
| CN112194870A (en) * | 2020-10-09 | 2021-01-08 | 骆家宽 | Process for preparing blown film |
| CN113321884A (en) * | 2021-06-08 | 2021-08-31 | 诚德科技股份有限公司 | Biocompatible antibacterial film and preparation method thereof |
| CN113696563A (en) * | 2021-09-01 | 2021-11-26 | 四川信立包装有限公司 | Environment-friendly material for printing film laminating technology and preparation method thereof |
| CN114369292A (en) * | 2021-12-08 | 2022-04-19 | 广东无穷食品集团有限公司 | Carboxymethyl chitosan/bacterial cellulose/nano silicon dioxide active packaging film and preparation method thereof |
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| CN104403298A (en) * | 2014-11-24 | 2015-03-11 | 西北农林科技大学 | Biodegradable composite film and preparation method thereof |
| CN104403298B (en) * | 2014-11-24 | 2016-06-29 | 西北农林科技大学 | A kind of biodegradable laminated film and preparation method thereof |
| CN104788979A (en) * | 2015-05-11 | 2015-07-22 | 王美岭 | Preparation method of fully-degradable foamed plastic |
| CN104788979B (en) * | 2015-05-11 | 2017-03-29 | 横琴桦硕环保科技有限公司 | A kind of preparation method of degradable foam plasticss |
| CN104945678A (en) * | 2015-05-22 | 2015-09-30 | 铜陵方正塑业科技有限公司 | Chestnut shell-based full-degradable plastic film and preparation method thereof |
| CN104892999A (en) * | 2015-05-22 | 2015-09-09 | 铜陵方正塑业科技有限公司 | High-water-resistance full-degradable plastic film and preparation method thereof |
| CN104892998A (en) * | 2015-05-22 | 2015-09-09 | 铜陵方正塑业科技有限公司 | Impact-resistant full-degradable plastic film and preparation method thereof |
| CN105885110A (en) * | 2016-05-27 | 2016-08-24 | 黑龙江八农垦大学 | Degradable packaging film material and preparing method and application thereof |
| CN105885110B (en) * | 2016-05-27 | 2018-04-20 | 黑龙江八一农垦大学 | A kind of degradable package membrane material, preparation method and application |
| CN106398068A (en) * | 2016-11-24 | 2017-02-15 | 安徽省天乐塑业有限公司 | Degradable food packaging film and preparation method thereof |
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| CN108285603A (en) * | 2018-03-07 | 2018-07-17 | 常德金德新材料科技股份有限公司 | A kind of degradable high-barrier composite material and preparation method thereof |
| CN108395582A (en) * | 2018-04-11 | 2018-08-14 | 河北农业大学 | Cassava starch-polyvinyl alcohol-chitosan composite film and preparation method thereof |
| CN108395582B (en) * | 2018-04-11 | 2020-10-16 | 河北农业大学 | Cassava starch-polyvinyl alcohol-chitosan composite film and preparation method thereof |
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| CN113321884A (en) * | 2021-06-08 | 2021-08-31 | 诚德科技股份有限公司 | Biocompatible antibacterial film and preparation method thereof |
| CN113696563A (en) * | 2021-09-01 | 2021-11-26 | 四川信立包装有限公司 | Environment-friendly material for printing film laminating technology and preparation method thereof |
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